#ifndef DES_H
#define DES_H
#include <string>
const unsigned char IP[64] = {
    58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4,
    62, 54, 46, 38, 30, 22, 14, 6, 64, 56, 48, 40, 32, 24, 16, 8,
    57, 49, 41, 33, 25, 17, 9,  1, 59, 51, 43, 35, 27, 19, 11, 3,
    61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7};
const unsigned char InvIP[64] = {
    40, 8, 48, 16, 56, 24, 64, 32, 39, 7, 47, 15, 55, 23, 63, 31,
    38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29,
    36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27,
    34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9,  49, 17, 57, 25};
const unsigned char E[48] = {32, 1,  2,  3,  4,  5,  4,  5,  6,  7,  8,  9,
                             8,  9,  10, 11, 12, 13, 12, 13, 14, 15, 16, 17,
                             16, 17, 18, 19, 20, 21, 20, 21, 22, 23, 24, 25,
                             24, 25, 26, 27, 28, 29, 28, 29, 30, 31, 32, 1};
const unsigned char P[32] = {16, 7, 20, 21, 29, 12, 28, 17, 1,  15, 23,
                             26, 5, 18, 31, 10, 2,  8,  24, 14, 32, 27,
                             3,  9, 19, 13, 30, 6,  22, 11, 4,  25};
const unsigned char SBoxes[8][4][16] = {
    {{14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7},
     {0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8},
     {4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0},
     {15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13}},

    {{15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10},
     {3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5},
     {0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15},
     {13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9}},

    {{10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8},
     {13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1},
     {13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7},
     {1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12}},

    {{7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15},
     {13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9},
     {10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4},
     {3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14}},

    {{2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9},
     {14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6},
     {4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14},
     {11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3}},

    {{12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11},
     {10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8},
     {9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6},
     {4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13}},

    {{4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1},
     {13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6},
     {1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2},
     {6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12}},

    {{13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7},
     {1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2},
     {7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8},
     {2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11}}};

//密钥置换距阵1
const unsigned char PC_1[56] = {
    57, 49, 41, 33, 25, 17, 9,  1,  58, 50, 42, 34, 26, 18, 10, 2,  59, 51, 43,
    35, 27, 19, 11, 3,  60, 52, 44, 36, 63, 55, 47, 39, 31, 23, 15, 7,  62, 54,
    46, 38, 30, 22, 14, 6,  61, 53, 45, 37, 29, 21, 13, 5,  28, 20, 12, 4};
//密钥置换距阵2
const unsigned char PC_2[48] = {14, 17, 11, 24, 1,  5,  3,  28, 15, 6,  21, 10,
                                23, 19, 12, 4,  26, 8,  16, 7,  27, 20, 13, 2,
                                41, 52, 31, 37, 47, 55, 30, 40, 51, 45, 33, 48,
                                44, 49, 39, 56, 34, 53, 46, 42, 50, 36, 29, 32};

//密钥生成移位表（循环左移）
const unsigned char ShiftTable[16] = {1, 1, 2, 2, 2, 2, 2, 2,
                                      1, 2, 2, 2, 2, 2, 2, 1};
// CDes

class CDes
{
public:
    CDes();
    virtual ~CDes();
    // DES加密，16字节密钥，8字节输入，8字节输出，不补数据长度LD
    bool fnbSingleDESEncrypt(const std::string &IsKey,
                             const std::string &IsDataIn,
                             std::string &OsDataOut);
    // DES解密，16字节密钥，8字节输入，8字节输出
    bool fnbSingleDESDecrypt(const std::string &IsKey,
                             const std::string &IsDataIn,
                             std::string &OsDataOut);
    // 3DES加密，16字节密钥，8字节输入，8字节输出，不补数据长度LD
    bool fnbTripleDESEncrypt(const std::string &IsKey,
                             const std::string &IsDataIn,
                             std::string &OsDataOut);
    // 3DES解密，16字节密钥，8字节输入，8字节输出
    bool fnbTripleDESDecrypt(const std::string &IsKey,
                             const std::string &IsDataIn,
                             std::string &OsDataOut);
    // 3DES加密，16字节密钥，数据块
    bool fnbBlocksEncrypt_3DES(const std::string &IsKey,
                               const std::string &IsDataIn,
                               std::string &OsDataOut);
    // 3DES解密，16字节密钥，数据块
    bool fnbBlocksDecrypt_3DES(const std::string &IsKey,
                               const std::string &IsDataIn,
                               std::string &OsDataOut);
    // OsTAC : 8字节
    bool fnbTAC(const std::string &IsKey, const std::string &IsInitValue,
                const std::string &IsDataIn, std::string &OsTAC);
    // MAC - DEA 算法
    bool fnbMAC_DES(const std::string &IsKey, const std::string &IsInitValue,
                    const std::string &IsDataIn, std::string &OsMAC);
    //计算MAC码(报文鉴别代码（Message Authentication Code)
    bool fnbMAC_3DES(const std::string &IsKey, const std::string &IsInitValue,
                     const std::string &IsDataIn, std::string &OsMAC);
    //（输入应用主密钥和ASN）
    bool fnbGetDeriveKey(const std::string &IsMasterKey,
                         const std::string &IsASN,
                         std::string &OsDeriveKey);  //计算各种应用的子密钥

    //计算过程密钥，16字节密钥，8字节输入，8字节输出
    bool fnbGetSessionKey(const std::string &IsDeriveKey,
                          const std::string &IsDataIn,
                          std::string &OsSessionKey);
    // 飞天卡,以CBC的模式计算
    bool fnb3Des_CBC(const std::string &key, const std::string &data,
                     std::string &out);
    // 飞天卡,3DES MAC 计算
    bool fnbMAC_3DES_FT(const std::string &IsKey,
                        const std::string &IsInitValue,
                        const std::string &IsDataIn, std::string &OsMAC);

private:
    //循环左移位 SubKeyPart 28字节
    void pShiftL(unsigned char *SubKeyPart);
    // C D 28字节  SubKey：48字节
    void pGetSubKey(unsigned char Round, unsigned char *C, unsigned char *D,
                    unsigned char *SubKey);
    // FR、FK:48字节  Output: 32字节
    void pSBoxChange(unsigned char *FR, unsigned char *FK,
                     unsigned char *Output);
    //取位数据  Data :8字节
    unsigned char fnbyGetBit(const unsigned char *Data, unsigned char Index);
    //置位数据
    void pSetBit(unsigned char *Output, unsigned char Index,
                 unsigned char Value);
    //对输入字符串按位取反
    bool fnbNOT(const std::string &sInput, std::string &sOutput);
    // DES算法
    void pDES(const unsigned char *Input, unsigned char *Output,
              const unsigned char *Key, bool EncryptID);
    // 3-DES 算法
    bool fnbTripleDES(const std::string &IsKey, const std::string &IsDataIn,
                      bool IbEncrypt, std::string &OsDataOut);
    // DES 算法
    bool fnbSingleDES(const std::string &IsKey, const std::string &IsDataIn,
                      bool IbEncrypt, std::string &OsDataOut);
    // 16进制字符串异或
    std::string fnsEOR(const std::string &IsStr1, const std::string &IsStr2);
};

#endif  // end DES_H